Woodward 9907-166
Woodward 9907-166 - Image 2

Woodward 9907-166

Product Introduction
The Woodward 9907-166 is a dedicated operator interface panel for the 505 series turbine control system. It provides local monitoring, control, and configuration capabilities for steam turbine governors, allowing operators to view system status, adjust setpoints, and acknowledge alarms directly at the control panel.

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Description

Woodward 9907-166

Technical Specifications

  • Display Type: Two-line text display, 24 characters per line.
  • Keypad: 30 multifunction keys for navigation and control.
  • Communication: RS-232/RS-422 with Modbus protocol.
  • Input Voltage: +24 Vdc, 1 A.
  • Operating Temperature: -4 to +140 °F (-20 to +60 °C).
  • Storage Temperature: -40 to +185 °F (-40 to +85 °C).
  • Humidity: 95% at 20 and 55 °C, sustained for 48 hours.
  • Enclosure Rating: IEC 60529, IP 56.

Functional Features

  • Local Control: Full operational control including start, stop, speed/load adjustment, and mode selection.
  • Real-Time Monitoring: Displays live process variables, system status, and alarm conditions.
  • Menu-Driven Configuration: Access to all programmable parameters and system diagnostics.
  • Overspeed Test Button: Dedicated hardware button for initiating overspeed protection tests.
  • Alarm Logging: Time-stamped alarm and trip event logging with FIFO buffer.

Application Scenarios

  • Steam Turbine Control: Primary operator interface for industrial steam turbines.
  • Turbo-Generators: Local control station for turbine-driven generators.
  • Turbo-Expanders: Monitoring and control for turbo-expander applications.
  • Mechanical Drive: Local interface for turbine-driven compressors and pumps.

Performance Parameters

  • Display Resolution: 2 x 24 character alphanumeric display.
  • Communication Speed: Configurable Modbus baud rate.
  • Response Time: Real-time display updates.

Material Composition

  • Enclosure: Rugged industrial-grade plastic/metal composite.
  • Keypad: Sealed membrane keypad for environmental protection.
  • Display: High-contrast LCD with LED backlight.

Structural Characteristics

  • Form Factor: Flush-mount panel design.
  • Dimensions: 14″ W x 11″ H x 4″ D (356 x 279 x 102 mm).
  • Weight: Approximately 2.5 kg.
  • Protection: IP56 front panel rating.

Working Principle
The 9907-166 communicates with the 505 controller via Modbus serial protocol. It sends operator commands (key presses) to the controller and receives real-time data for display. The panel acts as a human-machine interface (HMI) that translates operator intent into digital commands and presents controller data in human-readable format.

Installation Requirements

  • Panel Cutout: Cut panel opening to specified dimensions for flush mounting.
  • Wiring: Connect RS-232/RS-422 communication cable and +24 Vdc power supply.
  • Grounding: Ensure proper panel grounding for EMI protection.
  • Clearance: Maintain adequate clearance behind panel for ventilation.

Usage Precautions

  • Environmental Protection: Do not expose to direct sunlight or excessive moisture.
  • Cleaning: Use only mild detergent and soft cloth for cleaning; avoid solvents.
  • Keypad Care: Do not use sharp objects on the membrane keypad.
  • Firmware Compatibility: Verify firmware version compatibility with connected 505 controller.

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